Will include: integrated/1913 telescoping brace/stock, integrated/1913 folding brace/stock, interchangeable honey dipperish gripper, curved 5.7 mags because why not (with banana baseplate), more safety options, printed trigger options, and more mag release options. Probably some more stuff but we haven’t thought of them yet.
Not for the 5.7. No one makes a gun that has straight stick mags. For the 9 you can use metal stens.